Michelle Trachtenberg

NBC

This season, Trachtenberg has the opportunity to play good -- newbie nurse Chloe Payne on NBC's "Mercy" -- and evil -- Georgina Sparks stirring up trouble for the Upper East Siders on The CW's "Gossip Girl."

This season, Trachtenberg has the opportunity to play good -- newbie nurse Chloe Payne on NBC's "Mercy" -- and evil -- Georgina Sparks stirring up trouble for the Upper East Siders on The CW's "Gossip Girl." (NBC)

This season, Trachtenberg has the opportunity to play good -- newbie nurse Chloe Payne on NBC's "Mercy" -- and evil -- Georgina Sparks stirring up trouble for the Upper East Siders on The CW's "Gossip Girl."